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3 years ago

HELP ASAP!!! WILL MARK BRAINLIEST

Mathematics

1 answer:

Nitella [24]3 years ago

5 0

Answer:

50x⁴ - 20x² + 1 = 0

1. Quadratic form

50(x²)² - 20x² + 1 = 0

2. U is

x² = u

3. U- substitution

50u² - 20u + 1 = 0

4. Find the discriminant and identify roots

d = (-20)² - 4*1*50 = 200
u = (20 ± √200)/100
u = (2 ± √2)/10

Solve for x

x² = (2 ± √2)/10
x = ± √((2 ± √2)/10), four roots

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Answer:

Step-by-step explanation:

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3 years ago

Are these correct? If not please help me write the correct answer.

Keith_Richards [23]

Answer:

Mostly correct

For Q3, you are doing great, you remembered that negative numbers can happen if the exponent is an odd number.

For Q4, I think you were confused with the fractions,

4(i)

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4(ii) is also wrong but I'll let you try to fix it yourself following what I given you for 4(i). You should get 1/64

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